Boor-check



E. M. WOODWORTH.

DOOR CHECK.

APPLICATION FILED NOV. 2. 19!].

1,307,948. Patented June 24, 1919.

2 SHEETS-SHEET 1.

madzaarz E. M. WOODWORTH.

DOOR CHECK.

APPLICATION FILED NOV. 2. I911.

Patented June 24, 1919.

2 SHEETS-SHEET 2.

EDRED M. WOODWORTH, 015 DETROIT, MICHIGAN.

DOOR-CHECK.

Specification of Letters Patent.

Patented June 24, 1919.

Application filed November 2, 1917. Serial No. 199,923.

T 0 all "whom it may concern Be it known that I, EDREI) M. oonwon'rn,

a subject of the King of Great Britain, residing at Detroit, in the county of Wayne and State of Michigan, have invented new and useful Improvements in Door-Checks, of which the following is a specification.

Pertaining in general to door checks and particularly to the class of combined door checks and holders, the principal aim and object of the invention is to provide a device of this character wherein, on the move ment of the door to a closed position, any rapidity in the closing of the said door .will be retarded so as to avoid any unnecessary noise.

As another object, it is the purpose of the invention to provide a device of this character wherein the door when closed, can be locked against opening, there being means to automatically check the door in this closing movement to avoid the noise that would otherwise obtain.

As still another object, it is the purpose of the invention to provide a device of this character wherein adjustment of its parts may be had so as to insure the positive operation thereof for checking the door when being closed and for holding the door in a closed position.

As still another object, it is the purpose to provide a device of this character which may be used on a door opening on the right or the left, the device being capable of performing its functions effectively whether attached in its normally upright position or the reverse thereof.

As still another object, it'is the purpose of the invention toprovide a device of this character which is simple in construction, thoroughly reliable and eflicient in operation, strong and durable in construction and inexpensive in manufacture.

Still other and further objects will appear as the device is set forth in detail in the description which follows;

The embodiment in which the device is illustrated and described is thought at the present time to be its most efficient. The actual reduction to practice, however, may suggest certain desirable changes or alterations and these the right is claimed to make, provided they do not deviate from the scope of the subjoined claims.

The same numerals of reference designate the same parts throughout the several figures of the drawings, wherein:

Figure 1 is a view in perspective showing the application of the improved door check, portions of the door and its attendant jamb being also shown.

Fig. :2 is a view in side elevation of the device, looking at the member attached to the jamb, the member attached to the door being in the position assumed prior to the full closingof the door.

Fig. 3 is a top plan view of the device, the attendant door and jamb being shown in section.

Fig. 4 is a view in side elevation similar to Fig. 2 but showing the various parts of thedevicc in the position assumed when the door is completely closed.

Fig. 5 is a detail perspective view showing the adjustable member which contributes to the checking operation and which assists in, holding the door closed.

Fig. 6 is a perspective view of the pivotally mounted plate which responds to the first shock of the impact with the door.

Referring to the drawings, there is shown a portion of a door jamb A and also a portion of a door 13 which is mounted for swlnging movement in the ordinary well known manner. The checking and holding device comprises the door member C and the jamb or frame member D both of which will later be more definitely set forth in detail.

The door member C includes a body portioin 1 made preferably of sheet metal. Integrally connected with this body portion there is an upwardly extending arm 2 which, at its free end, curves out from the body portion. Directly above this curved arm 2, there is a second curved arm 3 which on tends from the upper end of the body portion and is curved to correspond with the curve in the arm 2. The arms 2 and 3 stand in spaced relation to each other and their free ends are provided with still more acute curves 4 to insure the ready admission therebetween of the co-acting portion of the jamb member D. The body portion 1 of the door member C is designed to be attached to the door by screws 5, one of the screws 5 passing transversely through an extension 6 which is made an integral part of the body 1 and which is provided with an elongated hole 7 near its upper end. It is through this hole 7 that the top screw 5 passes and the hole 7 is elongated to facilitate the setting of the door member C when first applied to the do'or. The upper screw 5 is applied and the elongated hole 7 permits a certain amount of vertical adjustment to properly aline the door mem'ber G with the co6perating portion of the j amb member C. After this alinement is obtained, the upper screw 5 is set down and the lower screw 5 inserted finally securing thedoor member C in its proper relative position.

A rectangular opening 8 is provided near the bottom of the arm 2 and is designed to be engaged by a device carried on the j amb member D to lock the door after it has once been closed. 011 the body portion 1 a curved projection 9 is formed, the material of which the door member C is made being punched at this point to provide stock for the forming of this projection 9 which is curved in outline and bends toward the bottom of the door member 0.

The j amb member D comprises a base plate 10, a lever plate 11 and a check arm 12, all of which are designed to be made of sheet metal. The base plate is rectangular in shape and at three of its corners is provided with holes through which screws 13 may pass to attach the plate to the jamb. A projection 1st is formed on the front of the plate 10 by turning at right angles thereto a portion of the material of which the plate is made. In a similar way a projec tion 15 is formed and just above the projection 15 a portion of the material of the plate is pressed up to form a boss leaving a supporting member 16 on which a locking lever '17 is pivoted, the locking lever having a hooked end 18 on one side of the pivot and a handle 19 on the other side thereof. The lever 17 is not intended for free pivotal movement but frictionally or otherwise suitably engages its pivot, so that it will retain any angular position in which it is placed.

The lever plate 11 is provided with a hole 20 by means of which it is attached to the base plate 10 through the instrumentality of a rivet 21 with which it pivotally engages. This lever plate 11 is of the shape shown in Fig. 6, being provided on one edge with an abutment shoulder 22 which is designed to engage the projection 14 and limit this lever plate to a vertical position. Below the shoulder 22 the edge of the lever plate is shaped to the arc of a circle having the pivot 21 as its center. In this way the lever plate is permitted movement from its vertical position on one side of its pivotal. connection only. At the bottom end of the lever plate 11 there is a right angled projection 28 formed by bending the material of which the lever plate is made. This proection 23 as well as the pro ection 15 is provided with a recess 2st, the recesses being on opposite sides of the two projections and afiording means for the attachment of the tension spring 25 therebetween. It will be observed that this tension spring tends normally to keep the lever 11 in a vertical position by bringing the shoulder of the latter in contact with the projection 1t and the spring 25 at the same time permits this lever to yield on its pivotal connection to separate the shoulder and projection just referred to. On the edge oppositev the shoulder 22, the lever 11 is provided with projections 23 and 27 extending at right angles to its surface and formed in the same way as are the other projections on this lever and on the base plates 10 and is further provided with an integral extension 28 that has a threaded hole 29 formed in it, this extension and this threaded hole being provided for the purpose of the attachment thereto of the U-shaped member 30. This U-shaped member 30 has one straight leg 31 which is adapted to lie on the back of the extension 28. The other leg of this U-shaped member is curved as shown in the drawings and the screw 83 passes through a hole formed in this leg 32 and enters a tapped hole 25) formed in the extension 28 after which this Screw passes through a hole formed in the leg 31 on the back outside of which it receives a nut 31-. It will thus be seen that this member 30 is cured to the extension '28 by means of its leg 81 which is held against the extension'by the engagement of the screw 33 with the extension and the attachment of the nut 3+1 to the screw. This U-shaped member cooperates with the arm 12 to cushion the latter when it is assuming the position that it occupies when the door is closed. The arm passes under the leg 32 when assuming this posi tion before referred to and this leg is arranged to be adjustable toward or from the face of the lever 11, this adjustment being effected by the screw 33 which has a shoulder that bears upon the outer face of this leg and forces it toward the face of the lever 11 when the screw is turned in or allows it to move away from the lever 11 when the screw is turned out. Any adjusted position of the leg 32 is maintained by the tightening of the nut 34 after the adjustment has been made, for this tightening of the nut thereafter precludes any turning movement of the screw.

The arm 12 carries at its free end a roll 35 which is rotatably mounted on a stud 3(3 and is rigidly secured to the arm. This arm 12 is further provided with a projection 37 which stands at right angles to its face and is formed by bending the material of which the arm is made, just as similar projections were formed on the other parts. The arm 12 is pivotally connected with the lever 11 by means of a stud 38 which passes through it and rigidly connects with the lever. Both Jon llO

the projections 37 and 27 are provided with notches 39 by means of which a spring 40 is distended between the two. The arm 12 is capable of angular movement 011 its pivotal connection with the lever 11, so that it may lie directly over the latter or be extended to a position beyond 90 degrees with reference to the latter. It is maintained in either of these positions by the spring 40 which contracts on one side of the pivot 38 to hold the arm is a raised position and on the other side of the pivot 38 to hold it in a lowered position, the arrangement being such as to make the greatest stretch in the spring 40 to occur when the projections 37, 27 and pivot 38 are in line. When the arm 12 is in the lowered position just referred to, it is required to pass under the leg 32 of the U-shaped member 30, thus effecting frictional engagement with the latter so as to prevent sudden impact with the projection 26 against which the arm abuts when in the lowered position.

In the raised position also the arm 12 abuts.

the projection 26 but on the upper edge thereof and the spring 40 serves to hold the arm in contact with this projection when the arm is raised.

The locking lever 17 before referred to stands normally in such a position that when the door is closed it will enter the opening 8 in the arm Lifting the handle 19 of the lever will then lower its hooked end 18, thus effecting a hooked engagement between the lever and the hole 8 in the arm and pre cluding the opening of the door until the lever is again raised to the position which it formerly occupied. This lever 18 is designed to be mounted in such a way that its angular movement, as before described, is limited between the points where the hooked end registers with the opening 8 and where it effects hooked engagement with the latter.

In setting forth the operation of the checking and holding device, let it be assumed that the door B is closed. The various parts of the members 0 and D will then be in the position shown in Fig. 4, the roller 35 being held between the arm 2 and the body portion 1 of the door member C. The operation of opening the door will then cause the arm 12 to move on its pivot 38, the roller 35 following the curved outline of the arm 2 until the arm 12 assumes the raised position where it rests in open position and is held in contact with the upper edge of the projection 26. Continued movement of the door then withdraws the holding member C from engagement with the roller 35 the latter disconnecting from the member 0 between the ends of the curved legs 3 and 2 of the latter. The jamb member D is then in aposition to check the door B when the door is allowed to close.

As the door closes, it being assumed that there is a spring connected therewith to effect the closing operation, the roller 35 first contacts with the door member 0 between the curved ends t of the arms 2 and 3. The arm 3 being curved tends to direct the roll 35 downward as the latter passes between the two arms 2 and 8. WVhen the roll reaches the projection 9 the arm is stopped if the door is shut rapidly. The spring 25, therefore, is called upon to yield and its resiliency willease the shock imparted by the door. When the roller 35 reaches the projection 9 a more acute change of direction is imparted to the roller, so as to move the arm 12 to the point where the spring 4: will. be on the opposite side of the pivot 38 from that which it previously occupied. The tension of the spring 4:0 then serves to complete the movement of the arm 12 which through the instrumentality of the roller 35 completes the operation of closing the door, the arm 12 then assuming its lowered position and trim tionally'engaging under the leg 32 of the U-shaped member to further decrease the suddenness of the final closing of the door.

The locking lever 17 may be used to secure the door against opening, or it may be lifted in a raised position where its hooked end 18 registers with the opening, 8, in which position it will not interfere with the operations of the checking functions of the device as a whole.

The invention having been described, what is claimed as new and useful is:

1. A device of the kind set forth, comprising a door member having two resilient arms in spaced relation to each other, a jamb member composed of a resilient lever, an arm swingingly supported on the lever, a roller carried by said arm and engageable between the arms of the door member, a resilient connection between the arm and the lever, a projection on the door member forco-action with the roller, and a pivotally mounted lever on the j amb member, the said lever having a hooked end, the door member having an opening formed in one of its arms and adapted to be engaged by the said hooked end for locking the door in a closed position. 2. A device of the kind set forth, comprising a door member provided with two resilient arms in spaced relation to each other, a jamb member composed of a resilient lever, an arm swingingly supported by said lever, a roller carried by said arm and engageable between the arms of the door member, means for tensioning the latter arm, and a projection formed on the door member for coaction with the roller, a lever pivoted on said j amb member, and a U-shaped member attached to said resilient lever and designed for contact with said swinging arm to check the force of said tensioning means, said U- shaped member being adjustable to regulate the amount of its friction, the pivoted lever being provided with a hooked end, the door member being provided with an opening to be engaged by the said hooked end to lock the door in the closed position.

3. A device of the kind set forth, comprising a door member provided With two curved resilient arms in spaced relation to each other and provided also with a projection on its base, a jamb member composed of a base plate, a lever pivotally mounted thereon, an armpivotally mounted on the lever, a roller mounted on the end of the arm and engageable between the arms of the door member, a spring tensioned between the aforesaid arm and the lever, a second spring tensioned between the lever and the base plate, means carried by both the door member and the jamb member whereby the door may be locked in the closed position, and a member designed for frictional engagement with the arm of said jamb member, this member being adjustable so as to vary its frictional engagement with the said arm, the projection on the door member being designed for co-action with the said roller.

4. A device of the kind set forth comprising a door member having two resilient arms in spaced relation to each other, a jamb member composed of a base piate, an upstanding arm yieldingly mounted in an upright position on the base plate, a lever swingingly supported at the upper end of the arm, a roller carried at the free end of the lever, and a spring tensioned between the lever and the arm, whereby the lever is held in either of two positions with respect to the arm to permit the roller to enter between the two resilient arms of the door member and engage the door member at the bottom thereof.

In testimony whereof I aflix my signature.

EDRED M. lVOODlVORTH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 1). 0. 

